merge revision(s) 40925: [Backport #8451]

	* dir.c (bracket): fix copy-paste error.  When the first and last
	  characters of fnmatch range have different length, fnmatch may
	  have wrongly matched a path that does not really match.
	  Coverity Scan found this bug.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_0_0@41068 b2dd03c8-39d4-4d8f-98ff-823fe69b080e